Relaxor behaviour of K <inf>0.5</inf>Bi <inf>0.5</inf>NbO <inf>3</inf>- BiScO <inf>3</inf> ceramics
Dielectric properties of (1 - x)K 0.5 Bi 0.5 TiO 3 - xBiScO 3 ceramics have been studied for compositions x < 0.5. Single-phase solid solutions occurred for compositions x < 0.25. A frequency-dependent dielectric relaxation was observed, consistent with relaxor behaviour. This gave r...
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| Main Authors: | , , , |
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| Format: | Journal |
| Published: |
2017
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| Online Access: | https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84861813860&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/42841 |
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| Institution: | Chiang Mai University |
| Summary: | Dielectric properties of (1 - x)K 0.5 Bi 0.5 TiO 3 - xBiScO 3 ceramics have been studied for compositions x < 0.5. Single-phase solid solutions occurred for compositions x < 0.25. A frequency-dependent dielectric relaxation was observed, consistent with relaxor behaviour. This gave rise to a relatively stable dielectric permittivity at high temperatures, for example, r 2880 ± 3, between temperatures of 500 and 700 K (1 kHz) for composition x = 0.15. This consistency in relative permittivity occurs at higher temperatures than for other lead-free dielectrics. Parameters from Vogel-Fulcher analysis are compared to other relaxors. © 2012 American Institute of Physics. |
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